| Brejniak vs Jin | 57–25 | 69.51% |
| Brejniak vs Kazuya | 57–21 | 73.08% |
| Brejniak vs Reina | 45–30 | 60.00% |
| Brejniak vs Asuka | 37–19 | 66.07% |
| Brejniak vs Bryan | 33–16 | 67.35% |
| Brejniak vs King | 34–10 | 77.27% |
| Brejniak vs Steve | 27–16 | 62.79% |
| Brejniak vs Lili | 30–13 | 69.77% |
| Brejniak vs Yoshimitsu | 26–13 | 66.67% |
| Brejniak vs Eddy | 21–14 | 60.00% |
| Brejniak vs Hwoarang | 17–14 | 54.84% |
| Brejniak vs Heihachi | 19–12 | 61.29% |
| Brejniak vs Dragunov | 14–15 | 48.28% |
| Brejniak vs Nina | 21–8 | 72.41% |
| Brejniak vs Lidia | 21–8 | 72.41% |
| Brejniak vs Jun | 20–8 | 71.43% |
| Brejniak vs Devil Jin | 20–6 | 76.92% |
| Brejniak vs Alisa | 13–12 | 52.00% |
| Brejniak vs Lee | 14–11 | 56.00% |
| Brejniak vs Lars | 11–13 | 45.83% |
| Brejniak vs Feng | 17–5 | 77.27% |
| Brejniak vs Jack-8 | 10–10 | 50.00% |
| Brejniak vs Victor | 13–7 | 65.00% |
| Brejniak vs Claudio | 16–3 | 84.21% |
| Brejniak vs Paul | 9–8 | 52.94% |
| Brejniak vs Xiaoyu | 8–9 | 47.06% |
| Brejniak vs Leroy | 12–5 | 70.59% |
| Brejniak vs Clive | 8–8 | 50.00% |
| Brejniak vs Azucena | 7–5 | 58.33% |
| Brejniak vs Law | 8–3 | 72.73% |
| Brejniak vs Anna | 10–0 | 100.00% |
| Brejniak vs Leo | 2–7 | 22.22% |
| Brejniak vs Kuma | 6–3 | 66.67% |
| Brejniak vs Zafina | 3–4 | 42.86% |
| Brejniak vs Shaheen | 2–3 | 40.00% |
| Brejniak vs Panda | 3–1 | 75.00% |
| Brejniak vs Raven | 2–1 | 66.67% |
| Brejniak vs Fahkumram | 3–0 | 100.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.